Double-spring double-lip homodromous sealing oil seal and roller sealing system
By using a double-spring, double-lip co-direction sealing oil seal in the roll sealing system, the problem of poor sealing performance in the prior art is solved, and a higher sealing effect and a longer service life are achieved.
Patent Information
- Application Number
- CN202422347946.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-25
AI Technical Summary
In the existing roll sealing system, when two separate single-lip skeleton oil seals are installed in combination, the coaxial accuracy control is poor, resulting in poor sealing performance.
A double spring double-lip co-direction sealing oil seal is adopted to form a whole of the sealing body, the first lip and the second lip through the skeleton to ensure the coaxiality of the first lip and the second lip, and to enhance the load bearing strength by the interval setting between the first radial frame and the second radial frame.
Improves sealing performance and installation accuracy, reduces leakage point risks, enhances sealing effect, extends service life, and simplifies installation and disassembly processes.
Smart Images
Figure CN223004419U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of oil seal equipment, in particular to a double-spring double-lip coaxial sealing oil seal and a roll sealing system. Background Art
[0002] An oil seal is a mechanical component used to seal oil. It isolates the components that need lubrication in the transmission components from the output components, so as to prevent the leakage of lubricating oil. The oil seal includes a skeleton-type oil seal, which includes an outer closed ring, a skeleton, a spring, and a rubber oil seal ring. Its skeleton is completely coated with rubber, and the rubber oil seal ring is provided with a self-tightening spring. The skeleton-type oil seal is widely used in the automotive and machinery industries.
[0003] In the existing roll sealing system, two separate single-lip skeleton oil seals are combined and installed. The coaxiality of the lips of the two independent single-lip skeleton oil seals is difficult to control because the axial reference plane of one skeleton oil seal relies on the end face of the other skeleton oil seal. During installation, it is impossible to determine whether the lip is perpendicular to the hole wall, resulting in the working surfaces of the lips not being in the same plane and poor sealing performance.
[0004] Therefore, it is necessary to provide a double-spring double-lip coaxial sealing oil seal and a roll sealing system to solve the above problems. Summary of the Utility Model
[0005] The utility model relates to a double-spring double-lip coaxial sealing oil seal and a roll sealing system. The double-spring double-lip coaxial sealing oil seal forms an integral body of a sealing body, a first lip, and a second lip through a skeleton, reducing the risk of leakage points between two independent skeleton oil seals, and the series sealing enhances the sealing effect. While ensuring the stiffness of the sealing body, the axial frame can also ensure the coaxiality of the first lip and the second lip, with higher installation accuracy and more convenient installation and disassembly. The first radial frame and the second radial frame are arranged at intervals on the same side of the axial frame. The first radial frame is correspondingly arranged with the first lip, and the second radial frame is correspondingly arranged with the second lip, which can not only ensure the axial accuracy of the corresponding lips, but also improve the bearing strength of the first lip and the second lip, and extend the service life. The roll sealing system equipped with the double-spring double-lip coaxial sealing oil seal can also ensure the coaxiality of the first lip and the second lip, with higher installation accuracy, more convenient installation and disassembly, and better sealing performance, solving the problem of poor sealing performance caused by poor coaxiality accuracy control during the combined installation of two separate single-lip skeleton oil seals in the prior art.
[0006] To solve the above problems, the content of the utility model is: a double-spring double-lip coaxial sealing oil seal, which includes:
[0007] A sealing body, the sealing body is arranged in a ring structure;
[0008] A skeleton, which is buried in the sealing body. The skeleton includes an axial frame body arranged along the axial direction of the sealing body, a first radial frame body and a second radial frame body arranged along the radial direction of the sealing body; the first radial frame body and the second radial frame body are spaced apart on the same side of the axial frame body;
[0009] A first lip, which is arranged on the outer side of one end of the sealing body, and the first radial frame body is correspondingly arranged with the first lip; and,
[0010] A second lip, which is arranged on the outer side of the other end of the sealing body, and the second radial frame body is correspondingly arranged with the second lip.
[0011] Furthermore, the size of the first radial frame body is smaller than that of the second radial frame body, which improves the rigidity and bearing capacity of the second radial frame body, thereby improving the sealing performance and durability.
[0012] Furthermore, one end of the axial frame body protrudes from the end of the first radial frame body, and the end of the other end of the axial frame body is fixedly connected to one end of the second radial frame body far from the second lip, which improves the coaxial accuracy and the stiffness and bearing strength of the axial frame body.
[0013] Furthermore, an annular first support body and a second support body are arranged on the inner side of the sealing body. One ends of the first support body and the second support body far from the sealing body are both bent and form a gap between the inner side walls of the sealing body, and the first support body and the second support body are bent in the same direction. One end of the first radial frame body far from the axial frame body is buried in the first support body, and one end of the second radial frame body far from the axial frame body is buried in the second support body. The first lip is arranged on the outer side of one end of the first support body far from the sealing body. The second lip is arranged on the outer side of one end of the second support body far from the sealing body. The first support body and the second support body improve the support strength, making the interference connection sealing performance of the first lip and the second lip higher and the sealing range wider.
[0014] Furthermore, the inner diameters and thicknesses of the first lip and the second lip are the same, which improves the double-sealing effect.
[0015] Furthermore, a first groove is provided on a side of the first support body facing away from the first lip, and a second groove is provided on a side of the second support body facing away from the second lip. The double-spring double-lip co-directional sealing oil seal further includes two pre-tightening springs, and one of the pre-tightening springs is installed in each of the first groove and the second groove to increase the restoring force of the first lip and the second lip and extend the service life.
[0016] Furthermore, the first groove and the second groove are open on a side facing the sealing body, which makes installation and disassembly more convenient and also provides sufficient space for the deformation of the corresponding first lip and second lip.
[0017] Furthermore, the outer side wall on the upper side of the first groove is horizontally arranged, making deformation more difficult and improving the sealing performance. The outer side wall on the upper side of the second groove is provided with an inclined surface, and the thickness at the open part of the outer side wall on the upper side of the second groove is the smallest, which is convenient for installation and can extend the service life of the second lip.
[0018] Furthermore, the height of the upper surface of the first lip is lower than the height of the upper surface of the sealing body, and the height of the lower surface of the second lip is higher than the height of the upper surface of the sealing body, which saves costs.
[0019] A roll sealing system, characterized by comprising: a roll, a bearing seat, an end cover, a spacer ring, a water seal, and the double-spring double-lip co-directional sealing oil seal as described in any one of the above; the end cover is sleeved between the roll and the bearing seat, the spacer ring is sleeved between the end cover and the roll, there are gaps between the spacer ring and the end cover, the inner side of the end cover, and the inner side of the bearing seat, and the water seal is hermetically arranged in the gap between the spacer ring and the side of the end cover away from the bearing seat; the double-spring double-lip co-directional sealing oil seal is hermetically arranged in the gap between the bearing seat and the spacer ring.
[0020] Due to the adoption of the above-mentioned double-spring double-lip co-directional sealing oil seal and roll sealing system, the beneficial effects of the present utility model compared with the prior art are as follows: The present utility model relates to a double-spring double-lip co-directional sealing oil seal and a roll sealing system. The double-spring double-lip co-directional sealing oil seal forms an integral body of a sealing body, a first lip, and a second lip through a skeleton, reducing the risk of leakage points between two independent skeleton oil seals. The series sealing enhances the sealing effect. The axial frame body can ensure the stiffness of the sealing body and also ensure the coaxiality of the first lip and the second lip, with higher installation accuracy and more convenient installation and disassembly. The first radial frame body and the second radial frame body are arranged at intervals on the same side of the axial frame body. The first radial frame body is correspondingly arranged with the first lip, and the second radial frame body is correspondingly arranged with the second lip, which can not only ensure the axial accuracy of the corresponding lip but also improve the bearing strength of the first lip and the second lip, extending the service life. The roll sealing system equipped with the double-spring double-lip co-directional sealing oil seal can also ensure the coaxiality of the first lip and the second lip, with higher installation accuracy, more convenient installation and disassembly, and better sealing performance, solving the problem of poor sealing performance caused by poor coaxiality accuracy control during the combined installation of two separate single-lip skeleton oil seals in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings in the following description are only the corresponding drawings of some embodiments of the present utility model.
[0022] Figure 1 FIG. is a schematic structural diagram of an embodiment of the double-spring double-lip co-directional sealing oil seal of the present utility model.
[0023] Figure 2 FIG. is a schematic structural diagram of an embodiment of the roll sealing system of the present utility model.
[0024] In the figure: 1. Double-spring double-lip co-directional sealing oil seal; 11. Sealing body; 12. Skeleton; 121. Axial frame body; 122. First radial frame body; 123. Second radial frame body; 13. First lip; 14. Second lip; 15. First support body; 151. First groove; 16. Second support body; 161. Second groove; 17. Pre-tightening spring; 2. Roll sealing system; 21. Roll; 22. Bearing seat; 23. End cover; 24. Spacer ring; 25. Water seal; 26. Gap. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present utility model.
[0026] The directional terms mentioned in the present utility model, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", "top" and "bottom", etc., are only with reference to the orientation of the accompanying drawings. The directional terms used are for explaining and understanding the present utility model, rather than for limiting the present utility model.
[0027] In the figures, units with similar structures are denoted by the same reference numerals.
[0028] Please refer to Figure 1 , in this embodiment, the double-spring double-lip co-directional sealing oil seal 1 includes a sealing body 11, a skeleton 12, a first lip 13 and a second lip 14. The sealing body 11 is arranged in an annular structure. The skeleton 12 is embedded in the sealing body 11. The skeleton 12 includes an axial frame body 121 arranged along the axial direction of the sealing body 11, a first radial frame body 122 and a second radial frame body 123 arranged along the radial direction of the sealing body 11. The first radial frame body 122 and the second radial frame body 123 are arranged at intervals on the same side of the axial frame body 121. The first lip 13 is arranged on the outer side of one end of the sealing body 11, and the first radial frame body 122 is correspondingly arranged with the first lip 13. The second lip 14 is arranged on the outer side of the other end of the sealing body 11, and the second radial frame body 123 is correspondingly arranged with the second lip 14.
[0029] In this embodiment, since after installation, the second radial frame body 123 is located outside the first radial frame body 122, the second radial frame body 123 makes the first seal, and the first radial frame body 122 makes the second seal. By improving the stiffness of the second radial frame body 123, the sealing performance can be fully guaranteed. The size of the first radial frame body 122 is smaller than that of the second radial frame body 123, which improves the rigidity and bearing capacity of the second radial frame body 123, thereby improving the sealing performance and durability.
[0030] Specifically, the length of the first radial frame body 122 is smaller than that of the second radial frame body 123, the width of the first radial frame body 122 is smaller than that of the second radial frame body 123, and the thickness of the first radial frame body 122 is smaller than that of the second radial frame body 123.
[0031] One end of the axial frame body 121 protrudes from the end of the first radial frame body 122, and the end of the other end of the axial frame body 121 is fixedly connected to one end of the second radial frame body 123 away from the second lip 14, improving the coaxial accuracy and the stiffness and load-bearing strength of the axial frame body 121, and having better stability after installation.
[0032] In this embodiment, an annular first support body 15 and a second support body 16 are arranged inside the sealing body 11. One ends of the first support body 15 and the second support body 16 away from the sealing body 11 are both bent, and a gap is formed between the inner side walls of the sealing body 11, and the first support body 15 and the second support body 16 are bent in the same direction. One end of the first radial frame body 122 away from the axial frame body 121 is embedded in the first support body 15, and one end of the second radial frame body 123 away from the axial frame body 121 is embedded in the second support body 16. The first lip 13 is arranged on the outer side of one end of the first support body 15 away from the sealing body 11. The second lip 14 is arranged on the outer side of one end of the second support body 16 away from the sealing body 11. The first support body 15 and the second support body 16 improve the support strength, making the interference connection sealing performance of the first lip 13 and the second lip 14 higher and the sealing range wider.
[0033] Specifically, the inner diameters and thicknesses of the first lip 13 and the second lip 14 are set to be the same, which can ensure that both the first lip 13 and the second lip 14 are in interference connection at the sealing position, preventing the situation that one of the two lips is not tightly sealed, and improving the double-sealing effect.
[0034] In order to improve the anti-load-bearing strength at the lip and enable quick reset after deformation, a first groove 151 is arranged on the side of the first support body 15 facing away from the first lip 13, and a second groove 161 is arranged on the side of the second support body 16 facing away from the second lip 14. The double-spring double-lip coaxial sealing oil seal 1 further includes two pre-tightening springs 17, and one pre-tightening spring 17 is installed in each of the first groove 151 and the second groove 161, improving the restoring force of the first lip 13 and the second lip 14 and extending the service life.
[0035] Specifically, the first groove 151 and the second groove 161 are open on the side facing the sealing body 11, which is more convenient for installation and disassembly, and also provides a surplus space for the deformation of the corresponding first lip 13 and second lip 14.
[0036] The outer side wall on the upper side of the first groove 151 is horizontally arranged, making deformation more difficult and improving the sealing performance. The outer side wall on the upper side of the second groove 161 is provided with an inclined surface, and the thickness at the open part of the outer side wall on the upper side of the second groove 161 is the smallest, which is convenient for installation and can extend the service life of the second lip 14.
[0037] The height of the upper surface of the first lip 13 is lower than that of the upper surface of the sealing body 11, and the height of the lower surface of the second lip 14 is higher than that of the upper surface of the sealing body 11, which saves costs.
[0038] The double-spring double-lip co-directional sealing oil seal 1 forms an integral body of the sealing body 11, the first lip 13 and the second lip 14 through the skeleton 12. The series sealing enhances the sealing effect. The axial frame body 121 can ensure the rigidity of the sealing body 11 and the coaxiality of the first lip 13 and the second lip 14, with higher installation accuracy and more convenient installation and disassembly. The first radial frame body 122 and the second radial frame body 123 are arranged at intervals on the same side of the axial frame body 121. The first radial frame body 122 is arranged corresponding to the first lip 13, and the second radial frame body 123 is arranged corresponding to the second lip 14, which can not only ensure the axial accuracy of the corresponding lip, but also improve the bearing strength of the first lip 13 and the second lip 14 and extend the service life.
[0039] Please refer to Figure 1 、 Figure 2 , in another embodiment, the roll sealing system 2 includes a roll 21, a bearing seat 22, an end cover 23, a spacer ring 24, a water seal 25 and the double-spring double-lip co-directional sealing oil seal 1 of any one of the above. The end cover 23 is sleeved between the roll 21 and the bearing seat 22, and a spacer ring 24 is sleeved between the end cover 23 and the roll 21. There are gaps 26 between the spacer ring 24, the inner side of the end cover 23 and the inner side of the bearing seat 22. The water seal 25 is hermetically arranged in the gap 26 on the side of the spacer ring 24 away from the bearing seat 22 of the end cover 23 for the first-stage sealing to block pollutants such as water seepage and large particles of dust. The double-spring double-lip co-directional sealing oil seal 1 is hermetically arranged in the gap 26 between the bearing seat 22 and the spacer ring 24.
[0040] Specifically, the side of the sealing body 11 of the double-spring double-lip co-directional sealing oil seal 1 facing away from the first lip 13 and the second lip 14 is closely attached to the inner side walls of the bearing seat 22 and the end cover 23. One end of the first lip 13 and the second lip 14 away from the sealing body 11 abuts against the inner side wall of the spacer ring 24 to form the second and third sealing layers. The pre-tightening spring 17 is arranged on the distal side of the first lip 13 or the second lip 14 along the direction of the pollutant flowing into the gap 26, which is beneficial to protecting the pre-tightening spring 17 itself from being polluted and affecting the sealing performance. The first support body 15 and the second support body 16 are arranged radially along the gap 26 to resist pollutants. The first radial frame body 122 and the second radial frame body 123 can further improve the bearing strength of the corresponding first support body 15 and second support body 16, thereby improving the sealing performance and extending the service life.
[0041] In this embodiment, the utility model relates to a double-spring double-lip co-directional sealing oil seal and a roll sealing system. The double-spring double-lip co-directional sealing oil seal forms an integral body of a sealing body, a first lip and a second lip through a skeleton, reducing the leakage point risk between two independent skeleton oil seals, and the series sealing enhances the sealing effect. The axial frame body can ensure the stiffness of the sealing body and also ensure the coaxiality of the first lip and the second lip, with higher installation accuracy and more convenient installation and disassembly. The first radial frame body and the second radial frame body are arranged at intervals on the same side of the axial frame body. The first radial frame body is correspondingly arranged with the first lip, and the second radial frame body is correspondingly arranged with the second lip, which can not only ensure the axial accuracy of the corresponding lip, but also improve the bearing strength of the first lip and the second lip, and extend the service life. The roll sealing system installed with the double-spring double-lip co-directional sealing oil seal can also ensure the coaxiality of the first lip and the second lip, with higher installation accuracy, more convenient installation and disassembly, and better sealing performance, solving the problem of poor sealing performance caused by poor coaxiality accuracy control during the combined installation of two separate single-lip skeleton oil seals in the prior art.
[0042] In summary, although the present utility model has been disclosed above with the preferred embodiments, the above preferred embodiments are not intended to limit the present utility model. Those of ordinary skill in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model is subject to the scope defined by the claims.
Claims
1. A double-spring double-lip same-direction sealing oil seal, characterized in that: include: A sealing body, wherein the sealing body is configured as an annular structure; A skeleton, wherein the skeleton is embedded in the sealing body, and the skeleton comprises an axial frame arranged along the axial direction of the sealing body, and a first radial frame and a second radial frame arranged along the radial direction of the sealing body; the first radial frame and the second radial frame are arranged at intervals on the same side of the axial frame; a first lip, wherein the first lip is disposed outside one end of the sealing body, and the first radial frame is disposed corresponding to the first lip; and The second lip is arranged outside the other end of the sealing body, and the second radial frame is arranged corresponding to the second lip.
2. The double-spring double-lip same-direction sealing oil seal according to claim 1, characterized in that: The size of the first radial frame is smaller than that of the second radial frame.
3. The double-spring double-lip same-direction sealing oil seal according to claim 1, characterized in that: One end of the axial frame is protruding from the end of the first radial frame, and the other end of the axial frame is fixedly connected to an end of the second radial frame away from the second lip.
4. The double-spring double-lip same-direction sealing oil seal according to claim 1, characterized in that: A first annular support body and a second annular support body are provided on the inner side of the sealing body; the first support body and the second support body are bent at one end away from the sealing body and a gap is formed between the inner side walls of the sealing body, and the first support body and the second support body are bent in the same direction; the first radial frame body is buried in the first support body at one end away from the axial frame body, and the second radial frame body is buried in the second support body at one end away from the axial frame body; the first lip is provided on the outer side of one end of the first support body away from the sealing body; the second lip is provided on the outer side of one end of the second support body away from the sealing body.
5. The double-spring double-lip same-direction sealing oil seal according to claim 4, characterized in that: The inner diameter and thickness of the first lip and the second lip are set to be the same.
6. The double-spring double-lip same-direction sealing oil seal according to claim 4, characterized in that: A first groove is provided on the side of the first support body away from the first lip, and a second groove is provided on the side of the second support body away from the second lip; the double-spring double-lip same-direction sealing oil seal also includes two pre-tightening springs, and one pre-tightening spring is installed in each of the first groove and the second groove.
7. The double-spring double-lip same-direction sealing oil seal according to claim 6, characterized in that: The first groove and the second groove are openly arranged on one side facing the sealing body.
8. The double-spring double-lip same-direction sealing oil seal according to claim 7, characterized in that: The outer side wall of the upper side of the first groove is arranged horizontally; the outer side wall of the upper side of the second groove is provided with an inclined surface, and the thickness of the outer side wall of the upper side of the second groove at the opening is the smallest.
9. The double-spring double-lip same-direction sealing oil seal according to claim 1, characterized in that , the height of the upper surface of the first lip is lower than the height of the upper surface of the sealing body, and the height of the lower surface of the second lip is higher than the height of the upper surface of the sealing body.
10. A roller sealing system, characterized in that: include: A rolling roller, a bearing seat, an end cover, a distance ring, a water seal and a double-spring double-lip unidirectional sealing oil seal as described in any one of claims 1 to 9; the end cover is sleeved between the rolling roller and the bearing seat, the distance ring is sleeved between the end cover and the rolling roller, gaps are provided between the distance ring and the end cover, the inner side of the end cover and the inner side of the bearing seat, the water seal is sealed in the gap between the distance ring and the end cover on a side away from the bearing seat; the double-spring double-lip unidirectional sealing oil seal is sealed in the gap between the bearing seat and the distance ring.